Informationsbedarfsermittlung und -analyse für den Entwurf von Informationssystemen
Fachtagung EMISA, Linz, 2. und 3. Juli 1987. Proceedings
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Chapter and Conference Paper
An Object Oriented Multidimensional Data Model for OLAP
Online Analytical Processing (OLAP) data is frequently organized in the form of multidimensional data cubes each of which is used to examine a set of data values, called measures, associated with multiple dime...
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Chapter and Conference Paper
Integrating Heterogeneous Tourism Information in TIScover — The MIRO-Web Approach
A broad spectrum of tourism information is already distributed over various web sites. However, a major problem for the tourist is to find these web sites and to deal with the differences concerning informatio...
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Chapter and Conference Paper
Holiday Packages on the Web
The tourism industry has reported dramatic changes in its structure over the last few years, not least due to the emerge of the Internet. Among others, tourists want to find products which are tailored to thei...
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Chapter and Conference Paper
A General Datamodel for Tourism Information Systems
In the travel industry, information plays a very big role and throughout the properties of its products information is very important for this line of business. To process this information different informatio...
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Chapter
Using Role-Templates for Handling Recurring Role Structures
Role-based access controls (RBAC) have been proposed as a design and implementation approach to discretionary access controls (DAC) more apt to the requirements of commercial enterprise environments. As advant...
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Chapter and Conference Paper
Online Booking On The Net — Problems, Issues and Solutions
Web-based tourist information systems are more and more required not to offer online brochures only, but rather to provide both, value and service. One of the first Web-based tourist information systems that r...
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Chapter and Conference Paper
Data Access to Heterogenous Tourism Information Systems
Today, a high amount of different tourism information systems are existing. For the potential tourist it would be very useful to be able to search information about his holidays in all of these separate system...
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Article
Reminiscences of a virologist wandering in Serendip
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Chapter
The use of the active database SIMON for a short term production planning system in the automotive industry
The goal of this paper is to describe a short term production planning system based on the behaviour integrated entity relationship approach (BIER). The BIER model is characterized by its ability to support bo...
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Book and Conference Proceedings
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Chapter and Conference Paper
Informationssysteme für Klein- und Mittelbetriebe
Der vorliegende Bericht will Gestaltungsmöglichkeiten von Informations-Systemen, im konkreten Büroinformationssystemen (BIS) für den Einsatz in Klein- und Mittelbetrieben aufzeigen. Dabei werden die Gestaltung...
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Chapter and Conference Paper
Form Flow Systems Based on NF2-Relations
In this paper it will be shown that a conceptual model based on nonfirst-normal-form (NF2) relations is well suited for applications in the area of form flow systems. A decomposition technique of NF2-relations is...
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Chapter and Conference Paper
Relational Design of Statistical Databases
A design concept for statistical databases based on the relational model is introduced. The external view of the end-user is the universal relation. Therefore it is possible for the end-user to formulate queri...
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Chapter and Conference Paper
Statistische Auswertung des Krankheitsverlaufs von Tumorpatienten am Beispiel Einer Studie Über Karzinome der Mundhöhle
Bei der Beurteilung des Krankheitsverlaufs von Tumorpatienten ist die Überlebenszeit häufig von zentraler Bedeutung. Charakterisiert man Erkrankungen als in der Zeit ablaufende Prozesse, deren Verlauf durch ei...
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Article
Cholesterol oxidase as a probe for studying membrane organisation
CHOLESTEROL is a major constituent of the phospholipid bilayer of many biological membranes. The ratio of cholesterol to phospholipid seems to be an important determinant of the physical and biological propert...
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Chapter
A Mathematical Systems—Theory of Database Systems
The various aspects of database systems are formalized. An information base is described as a projection of a part of the real world which follows certain semantical constraints. The concepts of the external a...
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Chapter
Cholesterol Oxidase as a Probe for Studying Membrane Composition and Organization
Lipid bilayers of biological membranes often contain sterols (mainly cholesterol) as a major component. Membrane cholesterol content has been examined in some detail and is often quantitated in relation to pho...
